We model the emission of high energy photons due to relativistic charged particle motion in intense laser-plasma interactions. This is done within a particle-in-cell code, for which high frequency radiation normally cannot be resolved due to finite time steps and grid size. A simple expression for the synchrotron radiation spectra is used together with a Monte-Carlo method for the emittance. We extend previous work by allowing for arbitrary fields, considering the particles to be in instantaneous circular motion due to an effective magnetic field. Furthermore, we implement noise reduction techniques and present validity estimates of the method. Finally, we perform a rigorous comparison to the mechanism of radiation reaction, and find the emitted energy to be in excellent agreement with the losses calculated using radiation reaction.

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BibTeX @article{Wallin2015,author={Wallin, Erik and Gonoskov, Arkady and Marklund, Mattias},title={Effects of high energy photon emissions in laser generated ultra-relativistic plasmas: Real-time synchrotron simulations},journal={Physics of Plasmas},issn={1070-664X},volume={22},issue={3},abstract={We model the emission of high energy photons due to relativistic charged particle motion in intense laser-plasma interactions. This is done within a particle-in-cell code, for which high frequency radiation normally cannot be resolved due to finite time steps and grid size. A simple expression for the synchrotron radiation spectra is used together with a Monte-Carlo method for the emittance. We extend previous work by allowing for arbitrary fields, considering the particles to be in instantaneous circular motion due to an effective magnetic field. Furthermore, we implement noise reduction techniques and present validity estimates of the method. Finally, we perform a rigorous comparison to the mechanism of radiation reaction, and find the emitted energy to be in excellent agreement with the losses calculated using radiation reaction.},year={2015},}

RefWorks RT Journal ArticleSR ElectronicID 219474A1 Wallin, ErikA1 Gonoskov, ArkadyA1 Marklund, MattiasT1 Effects of high energy photon emissions in laser generated ultra-relativistic plasmas: Real-time synchrotron simulationsYR 2015JF Physics of PlasmasSN 1070-664XVO 22IS 3AB We model the emission of high energy photons due to relativistic charged particle motion in intense laser-plasma interactions. This is done within a particle-in-cell code, for which high frequency radiation normally cannot be resolved due to finite time steps and grid size. A simple expression for the synchrotron radiation spectra is used together with a Monte-Carlo method for the emittance. We extend previous work by allowing for arbitrary fields, considering the particles to be in instantaneous circular motion due to an effective magnetic field. Furthermore, we implement noise reduction techniques and present validity estimates of the method. Finally, we perform a rigorous comparison to the mechanism of radiation reaction, and find the emitted energy to be in excellent agreement with the losses calculated using radiation reaction.LA engDO 10.1063/1.4916491LK http://dx.doi.org/10.1063/1.4916491LK http://publications.lib.chalmers.se/records/fulltext/219474/local_219474.pdfOL 30